Scroll compressor having a fixed scroll plate with groove

Abstract

In a scroll compressor, a groove is provided on a sliding face with a rotating scroll plate, of a fixed scroll plate, the periphery corner of the orbiting scroll plate rotates in a range between a position inner than the periphery side corner of the groove and the sliding face locating inner side than the internal circumference side corner of the groove.

We claim: 
     
       1. A scroll compressor comprising: a closed container;   a motor section housed in the closed container;   a fixed scroll plate having a bed plate and a spiral wrap integrally formed on the bed plate and extending from the bed plate; and   an orbiting scroll plate driven by said motor section and having a bed plate assembled with said orbiting scroll plate and a spiral wrap integrally formed on the bed plate and extending from the bed plate;   wherein the bed plate of said orbiting scroll plate is assembled so as to offset the center thereof for the center of the axis of said fixed scroll plate in a radius direction of a turn, and a ring-shaped groove concentric with the axis of said fixed scroll plate is formed in a sliding face of said fixed scroll plate, and   wherein a periphery corner of said orbiting scroll plate is disposed so as to orbit in a range between a position inwardly of an outer circumference side corner of the groove and a position of the sliding face inwardly of the internal circumference side corner of the groove.   
     
     
       2. A scroll compressor according to claim 1, wherein the periphery corner of the orbiting scroll plate is formed to have an obtuse angle.